1-W InGaP HBT Amp Boasts High Linearity For Mobile Infrastructure Apps

July 6, 2006

The AH212-EG amplifier from WJ Communications fits driver service in GSM, GPRS, CDMA, WCDMA, TD-SCDMA, and WiBro wireless technologies. It uses heterojunction bipolar (HBT) transistors made with indium gallium phosphide (InGaP). With two stages of amplifi

Lou Frenzel

Also, the AH212-EG uses internal active bias, and its overall gain is 26 dB. Its operating frequency ranges from 1800 to 2400 MHz. At 2140 MHz, the third-order intercept is +46 dBm, the 1-dB compressed power is +29.5 dBm, and the noise figure is 6 dB. And, it operates from a 5-V supply and typical current drain of about 800 mA.

The lead-free, 4- by 5-mm, quad flat no-lead (QFN) package complies with the European Union’s Restrictions on Hazardous Substances. Its large mounting surface improves the thermal impedance to the circuit board for overall reliability and lower junction temperatures. It can operate from –40°C to 85°C and achieve a mean-time to failure of 1 million hours.

The AH212 is available in production quantities now. Samples and fully assembled 1960- and 2140-MHz evaluation boards are also available.

WJ Communications
www.wj.com

About the Author

Lou Frenzel | Technical Contributing Editor

Lou Frenzel is a Contributing Technology Editor for Electronic Design Magazine where he writes articles and the blog Communique and other online material on the wireless, networking, and communications sectors. Lou interviews executives and engineers, attends conferences, and researches multiple areas. Lou has been writing in some capacity for ED since 2000.

Lou has 25+ years experience in the electronics industry as an engineer and manager. He has held VP level positions with Heathkit, McGraw Hill, and has 9 years of college teaching experience. Lou holds a bachelor’s degree from the University of Houston and a master’s degree from the University of Maryland. He is author of 28 books on computer and electronic subjects and lives in Bulverde, TX with his wife Joan. His website is www.loufrenzel.com.